Question for the cylinder of flame eater

[minh-thanh]

Question for the cylinder of flame eater!
I started the flame eater project so i made the cylinder with diameter bore about 14mm, every people think diameter bore of cylinder is small ??
Thanks for helps !!!!!!

 

[Cogsy]

Depends on the size of your engine I guess. If you're making the Jan Ridders internal valve engine, from memory the bore is given as 22mm. At that size it still needs to be set up and working perfectly to keep the flywheel turning. If you make the bore too small I doubt it'll have the power to run.

 

[Jasonb]

I've just made a 2/3 size version of the Alyn Foundry CHUK and was told that the smaller thay are the harder it is to get them to run. Luckily mine runs OK at 24mm bore and 32mm stroke.

 

[fcheslop]

Should be OK
This engine by Jan Ridders has a 11mm bore and about 20mm stroke
https://youtu.be/99_tsM6HLVk

 

[minh-thanh]

thanks for help and information !!!